[PPS] Exclude same-origin tiny plugins.

chrome/renderer/plugins/power_saver_info.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stddef.h>
 
 #include "base/command_line.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/renderer/plugins/power_saver_info.h"
 #include "content/public/common/content_constants.h"
+#include "content/public/common/content_features.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/webplugininfo.h"
 #include "content/public/renderer/render_frame.h"
 #include "third_party/WebKit/public/platform/WebSecurityOrigin.h"
 #include "third_party/WebKit/public/web/WebLocalFrame.h"
 #include "third_party/WebKit/public/web/WebPluginParams.h"
 #include "url/origin.h"
 
 namespace {
 
@@ skipping 78 matching lines @@
     info.blocked_for_background_tab = render_frame->IsHidden();
 
     auto status = render_frame->GetPeripheralContentStatus(
         render_frame->GetWebFrame()->top()->getSecurityOrigin(),
         url::Origin(params.url), gfx::Size(),
         content::RenderFrame::RECORD_DECISION);
 
     // Early-exit from the whole Power Saver system if the content is
     // same-origin or whitelisted-origin. We ignore the other possibilities,
     // because we don't know the unobscured size of the plugin content yet.
+    // If we are filtering same-origin tiny content, we cannot early exit here.
     //
     // Once the plugin is loaded, the peripheral content status is re-tested
     // with the actual unobscured plugin size.
-    if (status == content::RenderFrame::CONTENT_STATUS_ESSENTIAL_SAME_ORIGIN ||
-        status == content::RenderFrame::
-                      CONTENT_STATUS_ESSENTIAL_CROSS_ORIGIN_WHITELISTED) {
+    if (!base::FeatureList::IsEnabled(features::kFilterSameOriginTinyPlugin) &&
+        (status == content::RenderFrame::CONTENT_STATUS_ESSENTIAL_SAME_ORIGIN ||
+         status == content::RenderFrame::
+                       CONTENT_STATUS_ESSENTIAL_CROSS_ORIGIN_WHITELISTED)) {
       info.power_saver_enabled = false;
     } else {
       info.poster_attribute = GetPluginInstancePosterAttribute(params);
       info.base_url = document_url;
     }
   }
 
   if (is_flash)
     TrackPosterParamPresence(params, info.power_saver_enabled);
 
   return info;
 }